(19)
(11) EP 2 051 124 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.07.2009 Bulletin 2009/30

(43) Date of publication A2:
22.04.2009 Bulletin 2009/17

(21) Application number: 08153685.6

(22) Date of filing: 29.03.2008
(51) International Patent Classification (IPC): 
G02F 1/1335(2006.01)
G02B 26/00(2006.01)
 G02F 1/133(2006.01)
G02B 5/28(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 19.10.2007 US 999566 P
28.12.2007 US 966850

(71) Applicant: QUALCOMM MEMS Technologies, Inc.
San Diego, CA 92121 (US)

(72) Inventors:
  • Kothari, Manish
    Cupertino, CA 95014 (US)
  • Xu, Gang
    Cupertino, CA 95014 (US)
  • Khazeni, Kasra
    San Jose, CA 95120 (US)
  • Bita, Ion
    San Jose, CA 95134 (US)

(74) Representative: Witte, Weller & Partner 
Postfach 10 54 62
70047 Stuttgart
70047 Stuttgart (DE)

   


(54) Photovoltaic devices with integrated color interferometric film stacks


(57) Color photovoltaic (PV) devices formed using interferometric stacks tuned to reflect color covering the front side or back side of a PV cell, device, panel, or array are disclosed. Interferometric stacks covering PV devices include interferometric modulators (IMODs), or dichroic pair stacks. Such devices can be configured to reflect enough light of select wavelengths so as to impart a color, while transmitting enough light to the PV active material so as to generate useful electricity.







Search report